The option to load the game disc immediately if its in the system at start up. I would also like MiiVerse to continue and I would like multitasking apps and digital games (if its powerful enough). A voice chat app with friends that can be activated in the background would be super cool and maybe the ability to send an in game screen shot to their message/notification box app would be even better.
I also want a limited edition system that connects with the Wii U gamepad and allows future console games to be played off screen and apps that can be controlled by the touch screen.
Achievements/trophies done in the style like Smash Bros would be cool but isn't necessary for me.
Oh, and I want to buy a eShop game on a future handheld that can also be downloaded for free in the future console. The screen can have black borders if the resolution is that bad (or the handheld as a border like GameBoy VC titles on 3DS).